KanchiLUG (Kanchi Linux User Group) – weekly discussion on 24 July 2022. People from Linux and FOSS(Free and Open Source Software) Communities, to share their personal knowledge in meeting through Tamil.
So I am excited to know the history of KanchiLUG Community its quite interesting. Please visit the site to known more KanchiLUG.
Mr.Parameshwar Arunachalam and Mr.Mohan are very humble and friendly. They take the session to quite interesting and they launched the novel Dhuruvangal written by Author Nakkeeran.
These are the topics was discussed,
- OpenSSL Certificate
- Heartbleeding bug
- Repositories & Package Managers
- Arch Linux
- Novel Dhuruvangal
OpenSSL is an open-source command line tool that is commonly used to generate private keys, create CSRs, install your SSL/TLS certificate, and identify certificate information.
- OpenSSL is used for a large variety of tasks related to Public Key Infrastructure (PKI) and HTTPS (HTTP over TLS). (TBD)
- This cheat sheet style guide provides a quick reference to OpenSSL commands that are useful in common, everyday scenarios.
- This includes OpenSSL examples for generating private keys, certificate signing requests, and certificate format conversion. It does not cover all of the uses of OpenSSL.
- A Secure Socket Layer (SSL) certificate is a security protocol which secures data between two computers by using encryption.
- SSL certificates are used on web pages that transmit and receive end-user sensitive data, such as Social Security Number, credit card details, home address or password. Online payment forms are a good example.
- Need more explanation visit the site OpenSSL.
- The Heartbleed Bug is a serious vulnerability in the popular OpenSSL cryptographic software library. It was announced by computer security researchers on April 7, 2014.
- This weakness allows stealing the information protected, under normal conditions, by the SSL/TLS encryption used to secure the Internet.
- SSL/TLS provides communication security and privacy over the Internet for applications such as web, email, instant messaging (IM) and some virtual private networks (VPNs).
Source : heartbleed.com
The Heartbleed bug allows anyone on the Internet to read the memory of the systems protected by the vulnerable versions of the OpenSSL software. This compromises the secret keys used to identify the service providers and to encrypt the traffic, the names and passwords of the users and the actual content. This allows attackers to eavesdrop on communications, steal data directly from the services and users and to impersonate services and users.
Which websites were affected?
Affected companies included Tumblr, Google, Yahoo, Intuit (makers of TurboTax), Dropbox, Netflix, and Facebook. All of these companies have since fixed the problem. Amazon.com was not affected, but Amazon Web Services, which is used by a huge number of smaller websites, was. Apple, Microsoft, PayPal, LinkedIn, eBay, Twitter, and AOL said they weren’t affected.
Package Managers & Repositories
Package Management is a way of installing and maintaining software on the system. In early days, one had to compile source code to install software. Although, nothing wrong with compiling sources, but this days we can install packages from their linux distributor.
Those packages are made available to the user of a distribution in central repository. Such repositories includes many thousand of packages, each specially built and maintained for the distribution.
Arch Linux is an independent Linux distribution that adheres to the principles of simplicity, modernity, pragmatism, user centrality, and versatility.
Source : Github.com
It is a minimalist, lightweight, and bleeding edge distro targeting proficient GNU/Linux users over the idea of trying to be appealing to as many users as possible. Arch promotes the do-it-yourself (DIY) attitude among its users and thus provides you with the freedom to tweak your system according to your needs.